BirdAnalyst
Species · Georgia · BBS 2025 Release · 1966–2024

Yellow Warbler Population Trend in Georgia

All statesForest birds

Yellow Warbler in Georgia has fallen sharply: down 64% on the route-weighted index since 1970.

-64%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
32Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
42YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow Warbler Trends in GeorgiaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow Warbler has fallen sharply in Georgia: down 64% on the route-weighted index since 1970.

Yellow Warbler Population Forecast in Georgia

If the recent trend holds, Yellow Warbler in Georgia is projected to stay roughly flat through 2021, near 0.01 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±58.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2021TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.01Projected 2021 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1595% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±58.9%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Yellow Warbler in Georgia is projected to stay roughly flat through 2021, near 0.01 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±58.9%, with 100% of held-out values landing inside the 95% band.19662021
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20170.030.000.16
20180.020.000.16
20190.020.000.16
20200.010.000.15
20210.010.000.15

Yellow Warbler Survey Routes in Georgia

Routes recording Yellow Warbler in Georgia.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Deepstep619891989
Tazewell319841975
Big Oak320122011
Wrightsville219871982
Crest219931993
Maxeys219901990
Baldwin220051967
Bowdon220141990
Mountain Cty220161975
Rutledge219851982
Washington219791975
Everett City119761976
Lyons119661966
Forsyth119661966
Lincolnton119661966
Fairplay119781978
Athens119751975
Oakman119941971
Cartersville119851977
Henderson119951990
Lacross119831983
Jacksonboro119871987
Macon119801980
Linwood119771977
Baxter120161975

Yellow Warbler Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.